Environmental Rules in Lancaster County, NE (2026)
3 county-level rules, plus city-specific rules for 1 city in Lancaster County, Nebraska.
Verified from official government sources
Erosion Control
Anyone seeking a special permit to excavate clay, sand, gravel or stone on more than an acre in Lancaster County's AG or AGR districts must build retention and sediment basins and restore the site within nine months of finishing, under Zoning Resolution § 13.019.
Erosion Control at Excavation Sites
Some RestrictionsLincoln-Lancaster County Zoning Resolution § 13.019
Erosion controls, including retention and sediment basins shall be provided during excavation in conformance with State and Federal standards and County land erosion and sediment control regulations to prevent a change in the character of runoff onto adjacent land. ... Within nine months after the completion of excavation on any portion of the site, all cuts shall be returned to a slope of less...
Flood Zones
Any development within Lancaster County's mapped 100-year floodplain needs a separate development permit from the Director of Building and Safety before construction starts. The floodway itself bars new fill, construction or substantial improvement outright unless an engineer certifies no rise in flood levels, under Article 11 of the county zoning resolution.
Floodplain Development Rules in Lancaster County
Significant RestrictionsLincoln-Lancaster County Zoning Resolution § 11.009; § 11.021
No person, firm or corporation shall erect, construct, enlarge or substantially improve any building or structure, or undertake any development, including the placement of manufactured homes, in any area subject to the provisions of this article or cause the same to be done without first obtaining a separate development permit for such building or structure or other development from the Directo...
Flood Elevation Requirements
New and substantially improved buildings in Lancaster County's floodway fringe must have their lowest floor at least one foot above the regulatory flood elevation, the county's freeboard requirement written into § 11.017 of the zoning resolution's Flood Plain District article.
Flood Elevation Freeboard in Lancaster County
Some RestrictionsLincoln-Lancaster County Zoning Resolution § 11.017
All new construction or substantial improvements of residential structures shall have the lowest floor, including basement, elevated to or above one (1) foot above the regulatory flood elevation. Garages and storage buildings used exclusively for the storage of motor vehicles, and storage of other items readily removable in the event of a flood warning may have their lowest floor below flood el...
Environmental Rules by City in Lancaster County
1 cities in Lancaster County have their own environmental rules rules. Each link goes to that city's dedicated page with code citations.
All Lancaster County ordinances
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